EC/TDS calibration:
A)
PREPARATION
Single point EC calibration.
Choose appropriate standard:
Model
MW801
: use 1382 ppm
(
M10032B
) for TDS or 1.413
μ
S/cm (
M10031B
)
for EC calibration.
Model
MW802
: use 1500 ppm (
M10442B
) for
TDS or 1.413 mS/cm (
M10031B
) for EC calibration.
B)
PROCEDURE
Immerse the tip of the electrode in the standard
solution.
Wait for the reading to stabilize, and thermal
equilibrium be reached.
Turn the EC/TDS calibration
knob until the display shows
the EC or TDS reading at
25°C.
The calibration is now complete
and the meter is ready for use.
The instrument should be re-calibrated at least
once a month, or when the probe or battery is
replaced.
Note
: The conversion between EC and TDS is
made by a built-in circuit. If calibration
is made in EC range, TDS range is
automatically calibrated (or vice versa).
BATTERY REPLACEMENT:
The meters are powered by a 9V battery that is
in a compartment located in the rear of the
instrument.
When the battery becomes weak, the instrument
automatically switches off.
Replacement must only take place in a non-hazardous
area using an alkaline 9V battery. Slide off the
battery compartment cover and replace the old
battery with a new one. Make sure that the battery
contacts are fully engaged in the connector. Seat
the battery in is compartment and replace the
cover.
pH VERSUS TEMPERATURE CHART
OPTIONAL ACCESSORIES
M10007B
pH7.01 buffer solution,
25x20 mL sachet
M10004B
pH4.01 buffer solution,
25x20 mL sachet
M10010B
pH10.01 buffer solution,
25x20 mL sachet
M10031B
1413
μ
S/cm
calibration
solution, 25x20 mL sachet
M10032B
1382 ppm calibration
solution, 25x20 mL sachet
M10442B
1500 ppm calibration
solution, 25x20 mL sachet
MA9015
Electrode storage
solution, 220 mL bottle
MA850DIN
pH/EC/TDS spare probe
with 1m cable
P
M
E
T
S
E
U
L
A
V
H
p
C
°
F
°
4
0
0
9
A
M
7
0
0
9
A
M
0
1
0
9
A
M
0
2
3
1
0
.
4
3
1
.
7
2
3
.
0
1
5
1
4
0
0
.
4
0
1
.
7
4
2
.
0
1
0
1
0
5
0
0
.
4
7
0
.
7
8
1
.
0
1
5
1
9
5
0
0
.
4
4
0
.
7
2
1
.
0
1
0
2
8
6
0
0
.
4
3
0
.
7
6
0
.
0
1
5
2
7
7
1
0
.
4
1
0
.
7
1
0
.
0
1
0
3
6
8
2
0
.
4
0
0
.
7
6
9
.
9
5
3
5
9
3
0
.
4
9
9
.
6
2
9
.
9
0
4
4
0
1
4
0
.
4
8
9
.
6
5
8
.
9
5
4
3
1
1
5
0
.
4
8
9
.
6
5
8
.
9
0
5
2
2
1
6
0
.
4
8
9
.
6
2
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5
5
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3
1
7
0
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4
8
9
.
6
9
7
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9
0
6
0
4
1
9
0
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4
8
9
.
6
7
7
.
9
5
6
9
4
1
1
1
.
4
9
9
.
6
6
7
.
9
0
7
8
5
1
2
1
.
4
9
9
.
6
5
7
.
9
SPECIFICATIONS:
MW801
MW802
RANGE
0.0 to 14.0 pH
0.00 to 14.00 pH
0 to 1990 ppm
0 to 4000 ppm
0 to 1990
μ
S/cm
0.00 to 6.00 mS/cm
RESOLUTION
0.1 pH
0.10 pH
10 ppm
10 ppm
10
μ
S/cm
0.01 mS/cm
ACCURACY
±
0.2 pH
±
0.20 pH
(@ 20ºC)
±
2% Full scale
±
2% Full scale
CALIBRATION
M10007B
(pH 7.01)
SOLUTIONS
M10031B
(1.413 mS/cm)
M10032B
(1382ppm)
M10442B
(1500ppm)
CONVERSION
0.5
0.68
FACTOR
CALIBRATION
Manual, at 1 point
TEMPERATURE COMPENSATION
Automatic from 0 to 50ºC
PROBE
MA850DIN
combination pH/EC/TDS probe
ENVIRONMENT
0 to 50ºC, 95%RH max
BATTERY LIFE /TYPE
1x9V alkaline
approx. 150 hours of use
DIMENSIONS
143 x 80 x 32 mm
WEIGHT
220 g (with battery)
Milwaukee
ISTMW802 01/10
Test Equipment Depot - 800.517.8431 - 99 Washington Street Melrose, MA 02176 - TestEquipmentDepot.com
